The Mars Rovers Collection
| Item | PCGS No. | Date | Denom | Grade | Pop | Pop Higher | Owner's Comments |
| Gold Dollar, Type 1 (1849-1854) | 7521 | 1853 | G$1 | MS63 | 990 | 810 | |
| Gold Dollar, Type 2 (1854-1856) | 7531 | 1854 | G$1 | MS61 | 201 | 963 | |
| Gold Dollar, Type 3 (1856-1889) | 7575 | 1874 | G$1 | MS64 | 499 | 231 | |
